LAWNBOY Precision Z340 HLX Operator's Manual page 23

Important: Do not overfill the crankcase
with oil because the engine may be
damaged.
Changing and Draining the Oil
1. Start the engine and let it run until warm. This
warms the oil so it drains better.
2. Park the machine so that the drain side is
slightly lower than the opposite side to assure
the oil drains completely.
3. Disengage the blade control switch and set the
parking brake.
4. Stop the engine, remove the key, and wait for
all moving parts to stop before leaving the
operating position.
5. Slide the drain hose over the drain valve
(Figure 25). Place a pan below the drain hose.
Figure 25
1. Oil drain valve
6. Rotate oil drain valve to allow oil to drain
(Figure 25).
7. When oil has drained completely, close the
drain valve.
8. Remove the drain hose (Figure 25).
Note: Dispose of the used oil at a recycling
center.
9. Change the oil filter, if necessary (Figure 26).
10. Clean around the oil dipstick and unscrew the
cap (Figure 24).
11. Slowly pour approximately 80% of the
specified oil into the filler tube (Figure 24).
2. Oil drain tube
12. Check the oil level; refer to Checking the Oil
Level in Engine Maintenance, page 20.
13. Slowly add additional oil to bring it to the full
mark.
Changing the Oil Filter
Replace the oil filter every 100 hours or every
other oil change.
Note: Change the oil filter more frequently when
operating conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to Changing
and Draining the Oil in Engine Maintenance,
page 20.
2. Remove the old filter using an oil filter wrench.
Wipe the filter mounting base surface clean
(Figure 26).
3. Apply a thin coat of clean oil to the rubber
gasket on the replacement filter (Figure 26).
Figure 26
1. Oil lter wrench
2. Oil lter
4. Install the replacement oil filter to the filter
base by hand. Turn the oil filter clockwise
until the rubber gasket contacts the filter base;
then tighten the filter an additional 7/8 turn
(Figure 26). Oil Filter torque: 15-17 lb (20-24
N⋅m)
5. Add the specified amount of the recommended
oil; refer to Changing and Draining the Oil in
Engine Maintenance, page 20.
6. Start the engine and check the filter for leaks.
7. Stop the engine and check the oil level; refer to
Checking the Oil Level in Engine Maintenance,
page 20. Add oil if necessary.
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3. Filter base
4. Gasket